ubdate

node_modules/gulp-autoprefixer/index.js

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+'use strict';
+const fancyLog = require('fancy-log');
+const PluginError = require('plugin-error');
+const through = require('through2');
+const applySourceMap = require('vinyl-sourcemaps-apply');
+const autoprefixer = require('autoprefixer');
+const postcss = require('postcss');
+
+module.exports = options => {
+	return through.obj((file, encoding, callback) => {
+		if (file.isNull()) {
+			callback(null, file);
+			return;
+		}
+
+		if (file.isStream()) {
+			callback(new PluginError('gulp-autoprefixer', 'Streaming not supported'));
+			return;
+		}
+
+		postcss(autoprefixer(options)).process(file.contents.toString(), {
+			map: file.sourceMap ? {annotation: false} : false,
+			from: file.path,
+			to: file.path
+		}).then(result => {
+			file.contents = Buffer.from(result.css);
+
+			if (result.map && file.sourceMap) {
+				const map = result.map.toJSON();
+				map.file = file.relative;
+				map.sources = map.sources.map(() => file.relative);
+				applySourceMap(file, map);
+			}
+
+			const warnings = result.warnings();
+
+			if (warnings.length > 0) {
+				fancyLog('gulp-autoprefixer:', '\n  ' + warnings.join('\n  '));
+			}
+
+			setImmediate(callback, null, file);
+		}).catch(error => {
+			const cssError = error.name === 'CssSyntaxError';
+
+			if (cssError) {
+				error.message += error.showSourceCode();
+			}
+
+			// Prevent stream unhandled exception from being suppressed by Promise
+			setImmediate(callback, new PluginError('gulp-autoprefixer', error, {
+				fileName: file.path,
+				showStack: !cssError
+			}));
+		});
+	});
+};